1) Batman Through Time
When Batman is in a particular funk, Alfred mentions that he’s seen his master go through this on several occasions: namely 2016, 2011, 2008, 2005, 1998, 1995, 1992, 1989 and 1966. These are also the years of every previous Batman movie, complete with a LEGO recreation of a scene from each. Except 1966, where a clip of Adam West doing the Batusi is used.
A less obvious homage to Batman’s screen history occurs when Barbara Gordon speaks about the Dark Knight’s career during her first speech as commissioner. Behind her are shown several posters and iconic images of Batman over the years, only recreated in LEGO. These include nods to Batman: The Animated Series, The Dark Knight Returns (again), Batman: Mask of the Phantasm, the 1943 serial and finally, Batman’s debut in Detective Comics #27. At another point, all of the previous movie Batmobiles can be seen within the Batcave.
Speaking of which, Batman mentions how he’s been “doing this for 78 years.” Much like the Justice League birthday sign, this alludes to his creation in the comics back in 1939. Like LEGO Batman says, “he has aged beautifully.”